The domain owner of Loser.com has notoriously poked fun at other people having a rough day, like Kanye West, President Barack Obama, and Al Gore, according to The Washington Post.
The Trump prank is just extra-fun, since the mogul loves calling other people "loser" in his tweets.
Trump's not the first political candidate to be the prank victim of some online trolling.
In fact, there are some sites out there bearing the monikers of his opposition which redirect to his campaign website.
That's not the only site bearing Jeb Bush's name that sends users somewhere they might not expect.
The self-described "bear couple" said they bought the domain for $8.
As for the GOP candidate who placed first in Iowa last night?
If you want to look up Ted Cruz, and go to TedCruz.com, you'll be sent to a website that supports President Obama's immigration reform.
TedCruzForAmerica.com previously linked to the federal government's healthcare website, HealthCare.gov. Now it sends users to a site about immigrating to Canada.
Republican Wisconsin Gov. Scott Walker, who has dropped out of the GOP primary race, is also the target of some domain issues.
Carly Fiorina has dealt with her own "Domaingate" as well.
The Republican candidate received a lot of questions after entering the GOP race, when it was discovered that she hadn't secured the CarlyFiorina.org domain—the site instead takes aim at her time as CEO of Hewlett-Packard.
Fiorina instead pointed out how easy it is to be trolled.
Fiorina nabbed domains to prove her point to Seth Meyers and Chuck Todd that, hey, these things happen.
Sometimes you don't preemptively scoop up every domain that could be used to punk you.
We're just surprised more of the sites aren't being used to Rickroll people.